Adjustable Optical Lens and Camera Module and Manufacturing Method Thereof

ABSTRACT

An adjustable optical lens and camera module and manufacturing method thereof are provided, wherein the camera module includes an optical sensor and an adjustable optical lens. The adjustable optical lens, which is arranged in a photosensitive path of the optical sensor, includes an optical structural member and at least two lenses. Each of the lens is arranged in an internal space of the optical structural member along an axial direction of the optical structural member, wherein before packaging the adjustable optical lens and the optical sensor, at least one position of the lens in the internal space of the optical structural member is able to be adjusted, so that a central axis line of the adjustable optical lens and a central axis line of the optical sensor are coincided, so as to improve the image quality of the camera module.

CROSS REFERENCE OF RELATED APPLICATION

This is a Continuation application that claims the benefit of priorityunder 35 U.S.C. § 120 to a non-provisional application, application Ser.No. 15/057,044, filed Feb. 29, 2016. The afore-mentioned patentapplication is hereby incorporated by reference in its entirety.

NOTICE OF COPYRIGHT

A portion of the disclosure of this patent document contains materialwhich is subject to copyright protection. The copyright owner has noobjection to any reproduction by anyone of the patent disclosure, as itappears in the United States Patent and Trademark Office patent files orrecords, but otherwise reserves all copyright rights whatsoever.

BACKGROUND OF THE PRESENT INVENTION Field of Invention

The present invention relates to an optical equipment, and moreparticularly to an adjustable optical lens and camera module and themanufacturing method thereof.

Description of Related Arts

As mobile electronic devices have become popular, a camera modulerelated technologies applied to mobile electronic devices for imagescapturing (e.g. videos or pictures) for the user have been rapidlydeveloped and improved. Meanwhile, the camera module has recently andwidely applied to various fields, including health care, safety andsecurity, and industrial production fields, and etc.

The conventional camera module comprises an optical lens and an opticalsensor. The optical lens is arranged along a photosensitive path of theoptical sensor within a barrel, and that lights reflected from an objectcan enter an inside of the camera module through the optical lens and bereceived by the optical sensor to proceed photoelectric conversion, sothat images respective to the object can be subsequently captured by thecamera module.

As the camera module has been further applied to various fields andindustries, the quality for captured images of the camera module for themarket is strictly required. However, due to the limitation of themolding and packaging technique of the camera module and themanufacturing process of the optical lens of the camera module, thecurrent camera module in the market can barely fulfill the applicationneeds of the high quality camera module for the market. Moreparticularly, the conventional optical lens usually comprises aplurality of lens which are aligned overlappingly with each other andmolded together. In the optical lens, a central axis line of the opticallens can be affected by a position of the central axis line of eachlens. The most ideal condition is that the central axis line of eachlens is coincided with each other. However, because of the limitation ofthe packaging technique, there is certain deviation generated amongcentral axis lines of each lens. Also, because each lens needs to bearranged on the case of optical lens through a gluing or weldingprocess, a position and an inclination of each lens are affected by thegluing and welding material, so that the central axis line of theoptical lens has a greater deviation by packaging each overlapped lensin the camera case. In the process of packaging the optical lens and theoptical sensor together to form the camera module, it is difficult toensure that the central axis line of the optical lens and the centralaxis line of the optical sensor are aligned. Once, there is a deviationbetween the central axis line of the optical lens and the central axisline of the optical sensor, the image quality of the camera module willcertainly be affected. Therefore, in the process of producing the cameramodule, a way to ensure the image quality of the produced camera moduleand to solve a series of problems mentioned above is highly required inthe current market.

SUMMARY OF THE PRESENT INVENTION

The invention is advantageous in that it provides an adjustable opticallens and camera module and manufacturing method thereof, wherein theadjustable optical lens comprises an optical structural member and atleast two lenses. The lenses are overlappingly and spacedly arranged inan internal space of the optical structural member, and the position ofat least one of the lens in the internal space of the optical structuralmember is adjustably arranged.

Another advantage of the present invention is to provide an adjustableoptical lens and camera module and manufacturing method thereof, whereinthe adjustable optical lens includes an aperture member. The aperturemember is arranged on a top position of an optical structural member andis able to be adjusted respective to the position of the opticalstructural member.

Another advantage of the invention is to provide an adjustable opticallens and camera module and manufacturing method thereof, wherein thecentral axis line of the adjustable optical lens is able to be adjustedthrough changing the position of the lens in the internal space of theoptical structural member. For example, while the position of the lensin the internal space of the optical structural member is adjusted, thecentral axis lines of the adjustable optical lens and the lens setformed by each lens are coincided, so as to increase the yield rate ofthe adjustable optical lens.

Another advantage of the present invention is to provide an adjustablecamera lens and camera module and manufacturing method thereof, whichchanges current manufacturing method of camera module by preassemblingoptical lenses into optical structural member to be adjusted to reachresolution requirement and affixed, so as to form a fixed camera module.This reduces manufacturing procedures and is able to solve currentissues of too much tolerance from the assembling with the manufacturingmethod of camera module and process defect of overlength tolerance chainin the assembling.

Another advantage of the present invention is to provide an adjustablecamera lens and camera module and manufacturing method thereof, whichreduces successive testing process, lowers testing cost, and has lowerproduction cost and higher efficiency.

Another advantage of the invention is to provide an adjustable opticallens and camera module and manufacturing method thereof, whereinpositions of the lens of the adjustable optical lens in the internalspace of the optical structural member are able to be adjusted along atleast one direction.

Another advantage of the invention is to provide an adjustable opticallens and camera module and manufacturing method thereof, wherein ahorizontal position of each lens and/or aperture member of theadjustable optical lens in the internal space of the optical structuralmember is able to be adjusted.

Another advantage of the invention is to provide an adjustable opticallens and camera module and manufacturing method thereof, wherein avertical position of each lens and/or aperture member of the adjustableoptical lens in the internal space of the optical structural member isable to be adjusted.

Another advantage of the invention is to provide an adjustable opticallens and camera module and manufacturing method thereof, wherein a tiltposition of each lens and/or aperture member of the adjustable opticallens in the internal space of the optical structural member is able tobe adjusted.

Another advantage of the invention is to provide an adjustable opticallens and camera module and manufacturing method thereof, wherein aposition of each lens of the adjustable optical lens in the internalspace of the optical structural member is able to be adjusted to rotate.

Another advantage of the invention is to provide an adjustable opticallens and camera module and manufacturing method thereof, wherein theoptical structural member has at least one adjustment channels, and whenthe lens are packed in the internal space of the optical structuralmember to form the adjustable optical lens, the lens are arranged in theinternal space of the optical structural member which is relative to theadjustment channel, so that the position of the lens in the internalspace of the optical structural member from the external environment ofthe optical structural member is able to be adjusted through theadjustment channel, so as to simplify the operation process.

Another advantage of the invention is to provide an adjustable opticallens and camera module and manufacturing method thereof, in amanufacturing method for the camera module by packaging the adjustableoptical lens and an optical sensor with each other, the position of atleast one of the lens of the adjustable optical lens in the internalspace of the optical structural member is able to be adjusted, so as toensure that the central axis line of the adjustable optical lens of thecamera module and the central axis line of the optical sensor arecoincided.

Another advantage of the invention is to provide an adjustable opticallens and camera module and manufacturing method thereof, wherein whenthe position of the lens in the internal space of the optical structuralmember is adjusted, the adjustable optical lens and the optical sensorare packed. An offset generated between the adjusted optical lens andthe optical sensor can be prevented in this process of packaging theadjustable optical lens and the optical sensor, so as to guarantee thereliability of the camera module.

Another advantage of the invention is to provide an adjustable opticallens and camera module and manufacturing method thereof, in the processof packaging the camera module, a range of deviation of the central axisline of the adjustable optical lens and the central axis line of theoptical sensor can be adjusted within an acceptable range, so as toimprove a yield rate and image quality for the camera module.

Another advantage of the present invention is to provide an adjustableoptical lens and camera module and manufacturing method thereof, whereincamera modules made with this method are structurally tighter. Also, themanufacturing method is simple.

Another advantage of the present invention is to provide an adjustableoptical lens and camera module and manufacturing method thereof, whichis able to make camera modules have higher image quality throughcorrecting the assembling positions of the adjustable optical elementswith the image quality of the camera module as a standard.

Additional advantages and features of the invention will become apparentfrom the description which follows, and may be realized by means of theinstrumentalities and combinations particular point out in the appendedclaims.

According to the present invention, the foregoing and other objects andadvantages are attained by an adjustable optical lens and camera moduleand manufacturing method thereof, wherein the adjustable optical lenscomprises:

an optical structural member; and

at least two lens, wherein each of the lens is arranged in an internalspace of the optical structural member along an axial direction of theoptical structural member, wherein a position of at least one of thelens in the internal space of the optical structural member is adaptedto be adjusted.

According to an embodiment of the present invention, the opticalstructural member has at least one adjustment channel to communicatedthe internal space of the optical structural member with the externalenvironment, wherein the lens in the internal of the optical structuralmember is arranged on a position which is to corresponding to theadjustment channel, so that the position of the lens in the internalspace of the optical structural member can be selectively adjustedthrough the adjustment channel.

According to an embodiment of the present invention, position of theoptical lens adaptable to be adjusted in the internal space of theoptical structural member is adaptable to be adjusted in at least onedirection.

According to an embodiment of the present invention, the optical lensadaptable to be adjusted is preassembled in the inside of the opticalstructural member with adhesive, wherein the adhesive is in asemi-solidified condition.

According to an embodiment of the present invention, the adjustableoptical lens further includes an aperture member, wherein the aperturemember is preassembled on top of the optical structural member and onthe same optical path with the optical lens, wherein the assemblingposition of the aperture member is adaptable to be adjusted.

According to an embodiment of the present invention, assembling positionof the aperture member is adaptable to be adjusted in at least onedirection corresponding to the position of the optical structuralmember.

According to an embodiment of the present invention, the aperture memberis preassembled through semi-solidifying adhesive.

According to an embodiment of the present invention, the adhesive usedin preassembling is a mixed adhesive of an UV adhesive and athermosetting adhesive, which become semi-solidified after ultravioletexposure to achieve the preassembling, wherein after the heatingprocess, the adhesive will be completely solidified so as to affix theaperture member.

According to an embodiment of the present invention, an adhesiveinjection channel is set at the position of the aperture member, whereinthe adhesive injection channel is corresponding to the optical lens thatis adaptable to be adjusted, so as to affix the adjusted optical lensthrough injecting adhesive via the adhesive injection channel.

According to another aspect of the present invention, the presentinvention provides an adjustable optical lens, including:

an optical structural member;

at least one optical lens, wherein the optical lenses is set and affixedin the internal space of the optical structural member along the axialdirection of the optical structural member; and

an aperture member, wherein the aperture member is preassembled on topof the optical structural member and on the top side of the opticallens, wherein the assembling position of the aperture member isadaptable to be adjusted correspondingly to the spatial position of theoptical structural member.

According to an embodiment of the present invention, the aperture memberis preassembled through semi-solidifying adhesive.

According to an embodiment of the present invention, the adhesive usedin preassembling is a mixed adhesive of an UV adhesive and athermosetting adhesive, which become semi-solidified after ultravioletexposure to achieve the preassembling, wherein after the heatingprocess, the adhesive will be completely solidified so as to affix theaperture member.

According to an embodiment of the present invention, the assemblingposition of the aperture member is adaptable to be adjusted in at leastone direction.

According to an embodiment of the present invention, the inner wall ofthe optical structural member has at least one limit structure, adaptingto bear the optical lens.

According to another aspect of the present invention, the presentinvention provides a camera module, including:

a photosensitive device, wherein the photosensitive device includes anoptical sensor; and

an adjustable optical lens, wherein the adjustable optical lens isarranged in the path of photoreception of the optical sensor, whereinthe adjustable optical lens comprises an optical structural member, atleast an optical lens, and an aperture member, wherein each optical lensis arranged in the internal space of the optical structural member alongthe axial direction of the optical structural member, wherein theaperture member is arranged on top of the optical structural member andon the top side of the optical lens, wherein at least one the opticallens is preassembled in the internal space of the optical structuralmember, wherein before packaging the adjustable optical lens and thephotosensitive device, the assembling position of preassembled theoptical lens inside of the optical structural member is adaptable to beadjusted, wherein after adjustment, imaging of the camera module isturned to meet the resolution requirement.

According to an embodiment of the present invention, the side wall ofthe optical structural member has at least one adjustment channel toconnect the internal space of the optical structural member to theexternal environment, wherein the preassembled optical lens in theinternal of the optical structural member to correspond to theadjustment channel, which is adaptable to adjust the position of theoptical lens in the internal space of the optical structural memberthrough the adjustment channel.

According to an embodiment of the present invention, the spatialposition of the preassembled optical lens in the internal of the opticalstructural member is adaptable to be adjusted in at least one direction,wherein after adjustment, the central axis line of the adjustableoptical lens and the central axis line of the optical sensor coincide orare within an allowable range of deviance.

According to an embodiment of the present invention, the side walls ofthe optical structural member corresponding to each of the preassembledoptical lenses all have three adjustment channels separated from oneanother at 120 degrees, adaptable to adjust the horizontal and verticalposition of the preassembled optical lenses at each of the adjustmentchannel.

According to an embodiment of the present invention, the preassembledoptical lens is preassembled through semi-solidifying adhesive.

According to an embodiment of the present invention, the adhesive usedin preassembling is a mixed adhesive of an UV adhesive and athermosetting adhesive, which become semi-solidified after ultravioletexposure to achieve the preassembling, wherein after the heatingprocess, the adhesive will be completely solidified so as to affix thewhole adjustable optical lens.

According to an embodiment of the present invention, the photosensitivedevice further includes a filter, a lens mount, and a circuit board,wherein the filter is affixed on the lens mount, wherein the opticalsensor is attached both on the top side of the circuit board and on thebottom side of the filter, wherein the optical structural member isaffixed on the top side of the lens mount.

According to an embodiment of the present invention, the photosensitivedevice further includes a filter and a circuit board, wherein the filteris affixed on the optical structural member and located on the bottomside of the optical lens, wherein the optical sensor is attached both onthe top side of the circuit board and on the bottom side of the filter,wherein the optical structural member is affixed correspondingly to thespatial distance between the optical sensor.

According to another aspect of the present invention, the presentinvention provides a camera module, including:

a photosensitive device, wherein the photosensitive device includes anoptical sensor; and

an adjustable optical lens, wherein the adjustable optical lens isarranged in the path of photoreception of the optical sensor, whereinthe adjustable optical lens comprises an optical structural member, atleast an optical lens, and an aperture member, wherein each the opticallens is arranged in the internal space of the optical structural memberalong the axial direction of the optical structural member, wherein theaperture member is preassembled on the top of the optical structuralmember, wherein before packaging the adjustable optical lens and thephotosensitive device, the assembling position of the aperture member isadaptable to be adjusted correspondingly to the spatial position of theoptical structural member, wherein after adjustment, imaging of thecamera module is turned to meet the resolution requirement.

According to an embodiment of the present invention, at least oneoptical lens is preassembled in the internal space of the opticalstructural member, wherein before packaging the adjustable optical lensand the photosensitive device, the spatial position of the preassembledoptical lens inside of the optical structural member is adaptable to beadjusted.

According to an embodiment of the present invention, the assemblingposition of the optical lens is adaptable to be adjusted in at least onedirection, wherein after adjustment, the central axis line of theadjustable optical lens and the central axis line of the optical sensorcoincide or are within an allowable range of deviance.

According to an embodiment of the present invention, the sidewall of theoptical structural member has at least one adjustment channel to connectthe internal space of the optical structural member to the externalenvironment, wherein the preassembled optical lens in the internal ofthe optical structural member to correspond to the adjustment channel,so that the position of the lens in the internal space of the opticalstructural member can be selectively adjusted through the adjustmentchannel.

According to an embodiment of the present invention, the sidewalls ofthe optical structural member corresponding to each of the preassembledoptical lenses all have three adjustment channels separated from oneanother at 120 degrees, adaptable to adjust the horizontal and verticalposition of the preassembled optical lenses at each of the adjustmentchannel.

According to an embodiment of the present invention, an adhesiveinjection channel is set at the position of the aperture member, whereinthe adhesive injection channel is corresponding to the optical lens thatis adaptable to be adjusted, so as to affix the adjusted optical lensthrough injecting adhesive for solidification via the adhesive injectionchannel.

According to an embodiment of the present invention, the assemblingposition of the aperture member is adaptable to be adjusted in at leastone direction, wherein after adjustment, the central axis line of theadjustable optical lens and the central axis line of the optical sensorcoincide or are within an allowable range of deviation.

According to an embodiment of the present invention, the aperture memberis preassembled on the top of the optical structural member throughsemi-solidifying adhesive.

According to an embodiment of the present invention, the preassembledoptical lens is preassembled in the internal space of the opticalstructural member through semi-solidifying adhesive.

According to an embodiment of the present invention, the adhesive usedin preassembling is a mixed adhesive of an UV adhesive and athermosetting adhesive, which become semi-solidified after ultravioletexposure to achieve the preassembling, wherein after the heatingprocess, the adhesive will be completely solidified so as to affix thewhole adjustable optical lens.

According to an embodiment of the present invention, the photosensitivedevice further includes a filter, a lens mount, and a circuit board,wherein the filter is affixed on the lens mount, wherein the opticalsensor is attached both on the top side of the circuit board and on thebottom side of the filter, wherein the optical structural member isaffixed on the top side of the lens mount.

According to an embodiment of the present invention, the photosensitivedevice further includes a filter and a circuit board, wherein the filteris affixed on the optical structural member and located on the bottomside of the optical lens, wherein the optical sensor is attached both onthe top side of the circuit board and on the bottom side of the filter,wherein the optical structural member is affixed correspondingly to thespatial distance between the optical sensor.

According to another aspect of the present invention, the presentinvention provides a manufacturing method of camera module, includingthe following steps:

(A) arranging an adjustable optical lens along a photosensitive path ofan optical sensor comprised by an optical device;

(B) preassembling an adjustable optical element in the adjustableoptical lens to complete a preassembly of the camera module;

(C) adjusting an assembling position of the adjustable optical elementto make the imaging of the camera module after adjusted meet aresolution requirement; and

(D) packaging the adjustable optical lens and the optical device so asto form the camera module.

According to an embodiment of the present invention, the adjustableoptical element is at least a lens, wherein in the step (B), at leastone lens is preassembled in the adjustable optical lens as apreassembled optical lens, wherein by adjusting the assembling positionof the preassembled optical lens, a central axis line of the adjustableoptical lens and a central axis line of the optical sensor are adjustedto coincide or be within an allowable range of deviation therebetween.

According to an embodiment of the present invention, the adjustableoptical element is an aperture member, wherein in the step (B), theaperture member is preassembled on the top of the adjustable opticallens, wherein by adjusting the assembling position of the aperturemember, the central axis line of the adjustable optical lens and thecentral axis line of the optical sensor are made to be coincided or bewithin an allowable range of deviation.

According to an embodiment of the present invention, wherein theadjustable optical element includes an aperture member and at least alens, wherein in the step (B), the aperture member and the lens arepreassembled in the adjustable optical lens, wherein by adjusting theassembling positions of the aperture member and the preassembled opticallens, the central axis line of the adjustable optical lens and thecentral axis line of the optical sensor are made to be coincided or bewithin an allowable range of deviation.

According to an embodiment of the present invention, in the abovemethod, a side wall of an optical structural member included by theadjustable optical lens has at least one adjustment channel therein toconnect the internal space of the optical structural member to theexternal environment, wherein the preassembled lens in the internalspace of the optical structural member corresponding to the adjustmentchannel is adaptable to adjust its spatial position inside the opticalstructural member through the adjustment channel.

According to one embodiment of the present invention, in the step (D),by an adhesive dispensing process in the adjustment channel, theadjustment channel is sealed, and by conducting a heating process, theadhesive for preassembling the lens and for the above adhesivedispensing process is solidified, so that the adjusted lens is affixed,so as to further fix the whole camera module.

According to an embodiment of the present invention, in the step (D), byan adhesive dispensing process in the adjustment channel, the adjustmentchannel is sealed, and by conducting a heating process, the adhesive forpreassembling the lens and aperture member and for the above adhesivedispensing process is solidified, the adjusted lens and the aperturemember are fixed, so as to further fix the whole camera module.

According to an embodiment of the present invention, in the step (D),the aperture member has at least an adhesive injection channel thereon,wherein the adhesive injection channel is corresponding to thepreassembled optical lens, wherein by injecting adhesive into theadhesive injection channel and conducting heating process to solidifythe adhesive for preassembling and the adhesive for adhesive dispensing,the adjusted optical lens is affixed, so as to further fix the wholecamera module.

According to an embodiment of the present invention, in the step (D),the aperture member has at least an adhesive injection channel thereon,wherein the adhesive injection channel is corresponding to thepreassembled optical lens, wherein by injecting adhesive into theadhesive injection channel and conducting heating process to solidifythe adhesive for preassembling and the adhesive for adhesive dispensing,the adjusted optical lens and the aperture member are fixed, so as tofurther fix the whole camera module.

According to an embodiment of the present invention, in the abovemethods, assembling position of the adjustable optical element isadjusted through adjusting at least any one direction of the horizontaldirection, vertical direction, tilt direction, and peripheral directionof the adjustable optical element.

According to an embodiment of the present invention, in the abovemethods, the adjustable optical element is preassembled with adhesive,wherein the adhesive used for preassembling is a mixed adhesive of an UVadhesive and a thermosetting adhesive, which become semi-solidifiedafter ultraviolet exposure to achieve the preassembling of theadjustable optical element in the step (B), wherein in step (D) afterthe heating process, the adhesive will be completely solidified, to fixthe whole camera module.

According to an embodiment of the present invention, the step (C)includes the following steps:

(C1) capturing imaging of the preassembled camera module;

(C2) calculating calibration measurement for the adjustable opticalelement with software based on the imaging of the camera module; and

(C3) adjusting assembling position of the adjustable optical elementaccording to the calibration measurement.

According to an embodiment of the present invention, in the step (C), ifthe imaging of the camera module fails to meet the resolutionrequirement after the adjustable optical element is adjusted, the steps(C1) to (C3) need to be repeated until the imaging of the adjustedcamera module meets the resolution requirement.

According to an embodiment of the present invention, in the step (C1),the preassembled camera module is powered on and imaging of the cameramodule is captured, wherein the capturing of the imaging of the cameramodule is based on shooting MTF testing chart with the camera module,wherein the MTF value is applied to represent the imaging quality of thecamera module. A greater MTF value indicates a higher imaging quality ofthe camera module. Every time when the imaging of the camera module iscaptured, a MTF value corresponding to the imaging needs to becalculated. The MTF value is checked to determine if it is greater thanthe standard. If the MTF value is greater than or equal to the standard,the capturing is completed; if the MTF value is lower than the standard,another capturing will be required.

According to an embodiment of the present invention, in the process ofcapturing imaging every time, environmental parameters for the shootingof the camera module, including the parameter of light and distancebetween the MTF testing chart and the camera module, are strictlycontrolled, so as to ensure the accuracy and consistency of imagingcapturing for implementing subsequent adjusting steps.

According to an embodiment of the present invention, in the step (C2), asoftware applied to adjust the assembling position of the adjustableoptical element is adaptable to be based research of sensibility ofoptical design of optical lens. The method of applying software tocalculate the calibration measurement of assembling position of theadjustable optical element includes: (1) measuring opticalcharacteristics of the camera module, including MTF value, eccentricityof the optic axis, tilt angle of the optic axis, and field curvature,before calibration; and (2) calculating the calibration measurementrequired by the assembling position of the adjustable optical elementbased on the sensibility of the eccentricity of the optic axis, tiltangle of the optic axis, and field curvature of the assembling positionof the adjustable optical element respectively.

According to an embodiment of the present invention, in the step (A), byassembling the adjustable optical lens and the photosensitive device toachieve the fixed assembling for part of the optical elements comprisedby the camera module, wherein the photosensitive device furthercomprises a filter, a lens mount, and a circuit board, wherein thefilter is fixedly set on the lens mount, wherein the optical sensor isattached both on the top side of the circuit board and on the bottomside of the filter, wherein all elements of the adjustable optical lensbesides of the adjustable optical element are fixed on the top side ofthe lens mount. In the process of the assembling and fixing, theassembling tolerances of the above elements are controlled within anallowable range.

According to an embodiment of the present invention, in the step (A), byassembling the adjustable optical lens and the photosensitive device toachieve the fixed assembling for part of the optical elements includedby the camera module, wherein the photosensitive device furthercomprises a filter and a circuit board, wherein the filter is fixedlyset on an optical structural member comprised by the adjustable opticallens and is on the bottom side of the optical lens, wherein the opticalsensor is attached both on the top side of the circuit board and on thebottom side of the filter, wherein the optical structural member isaffixed correspondingly to the spatial distance between the opticalsensor. In the process the assembling and fixing, the assemblingtolerances of the above elements are controlled within an allowablerange.

Still further objects and advantages will become apparent from aconsideration of the ensuing description and drawings.

These and other objectives, features, and advantages of the presentinvention will become apparent from the following detailed description,the accompanying drawings, and the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of an adjustable optical lens according toa preferred embodiment of the present invention.

FIG. 2 is a sectional view of the adjustable optical lens according tothe above preferred embodiment of the present invention.

FIG. 3 is a first perspective view of a manufacturing process of thecamera module according to the above preferred embodiment of the presentinvention.

FIG. 4 is a flow diagram of a manufacturing method of the camera moduleaccording to the above preferred embodiment of the present invention.

FIG. 5 is a perspective view of an optical structural member of anadjustable optical lens according to another preferred embodiment of thepresent invention.

FIG. 6 is a first perspective view of a manufacturing process of thecamera module according to the above another preferred embodiment of thepresent invention.

FIG. 7 is a second perspective view of a manufacturing process of thecamera module according to the above another preferred embodiment of thepresent invention.

FIG. 8 is a flow diagram of a manufacturing method of the camera moduleaccording to the above another preferred embodiment of the presentinvention.

FIG. 9 is a perspective structural view of a camera module according toanother preferred embodiment of the present invention.

FIG. 10 is a sectional view of the camera module according to the aboveanother preferred embodiment of the present invention.

FIG. 11 is a flow diagram of a manufacturing method of the camera moduleaccording to the above another preferred embodiment of the presentinvention.

FIG. 12 is a perspective structural view of a camera module according toanother preferred embodiment of the present invention.

FIG. 13 is a sectional view of a camera module according to the aboveanother preferred embodiment of the present invention.

FIG. 14 is a flow diagram of a manufacturing method of the camera moduleaccording to the above another preferred embodiment of the presentinvention.

FIG. 15 is a perspective structural view of a camera module according toanother preferred embodiment of the present invention.

FIG. 16 is a sectional view of the camera module according to the aboveanother preferred embodiment of the present invention.

FIG. 17 is a flow diagram of a manufacturing method of the camera moduleaccording to the above another preferred embodiment of the presentinvention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The following description is disclosed to enable any person skilled inthe art to make and use the present invention. Preferred embodiments areprovided in the following description only as examples and modificationswill be apparent to those skilled in the art. The general principlesdefined in the following description would be applied to otherembodiments, alternatives, modifications, equivalents, and applicationswithout departing from the spirit and scope of the present invention.

Referring to FIG. 1 and FIG. 2 of the drawings, an adjustable opticallens 10 according to a preferred embodiment of the present invention isillustrated. A central axis line of the adjustable optical lens 10 isable to be adjusted again after the adjustable optical lens 10 has beenproduced, so that when the adjustable optical lens 10 is subsequentlyapplied to an imaging system, the central axis line of the adjustableoptical lens 10 can be adjusted based on specific parameters of theimaging system. Specifically, the adjustable optical lens 10 comprisesan optical structural member 11 and two or more lens 12. Each lens 12 isarranged in an internal space of the optical structural member 11 alongan axial direction of the optical structural member 11, wherein positionof at least one lens 12 in the internal space of the optical structuralmember 11 is arranged in an adjustable configuration. By this way, thecentral axis line of the adjustable optical lens 10 is arranged to beadjustable based on the application needs of the imaging system afterthe adjustable optical lens 10 is produced.

Furthermore, the optical structural member 11 of the adjustable opticallens 10 has at least one adjustment channels 111. Each of the adjustmentchannels 111 is adapted to communicate the internal space of the opticalstructural member 11 with an external environment. When the lenses 12are all overlappingly and spacedly arranged in the internal space of theoptical structural member 11 along the axial direction of the opticalstructural member 11, an outer wall of each lens 12 is arranged on aposition corresponding to the adjustment channels 111. Therefore, thepositions of the lenses 12 in the internal space of the opticalstructural member 11 can be adjusted later from the external environmentof the optical structural member 11 through the adjustment channels 111,which is able to achieve the adjustment of the central axis line of theadjustable optical lens 10.

Those skilled in the art should know that the above disclosed structureof the adjustable optical lens 10 uses an example that the theories ofthe adjustable optical lens 10 can be described by adjusting theposition of the outermost lens 12 in the internal space structuralmember 11. Specifically, according to the above mentioned preferredembodiment, the adjustable optical lens 10 comprises an opticalstructural member 11 and multiple lens 12 overlappingly and spacedlyarranged in the internal space of the optical structural member 11,wherein the optical structural member 11 has one adjustment channel 111.The outermost lens 12 in the internal space of the optical structuralmember 11 is located at a position corresponding to the adjustmentchannel 111. Meanwhile, the lens 12 does not connect with the inner wallof the optical structural member 11, so that the position of the lens 12in the internal space of the optical structural member 11 can beadjusted. In other words, a gap is formed between the outer wall of thelens 12 and the inner wall of the optical structural member 11, whereinthe size of the gap can be greater than or equal to 3 micrometers. Anend of an adjustment element is applied to insert from outside of theoptical structural member 11 into the adjustment channel 111 and isextended to the internal space of the optical structural member 11, soas to push against the outer wall of the lens 12, and then the positionof the lens 12 in the internal space of the optical structural member 11can be adjusted, and the central axis line of the adjustable opticallens 10 can be adjusted. After the central axis line of the adjustableoptical lens 10 is adjusted, the position of lens 12 and opticalstructural member 11 are fixed again. For example, the positions of lens12 and optical structural member 11 can be fixed by a gluing process ora welding process, so as to ensure the reliability of the adjustableoptical lens 10 while in use. Those skilled in the art may appreciatethat the distance for the lens 12 to be adjusted in the internal spaceof the optical structural member 11 is equal to or smaller than the gapbetween the outer wall of the lens 12 and the inner wall of the opticalstructural member 11.

Although FIGS. 1 and 2 of the drawings show that the lens 12 in theinternal space of the optical structural member 11 is able to beadjusted by arranging the adjustment channels 111 on the opticalstructural member 11 of the adjustable optical lens 10, those skilled inthe art should understand that any other possible methods that can beused to adjust the relative position of the lens 12 in the internalspace of the optical structural member 11 can be applied and shall beconsidered modified implementation according to the adjustable opticallens 10 of the present invention.

Referring to FIG. 3 of the drawings, the present invention alsocomprises a camera module which comprises the adjustable optical lens10. The camera module further comprises an optical sensor 20 such as animage sensor or a photosensitive chip. The adjustable optical lens 10 isinstalled above the optical sensor 20, so that lights reflected from anobject may enter the inside of the camera module from the adjustableoptical lens 10 and then be received by the optical sensor 20 to proceedphotoelectric conversion, so that the camera module can subsequentlygenerate images related to the object.

Referring to FIG. 3 of the drawings, according to the above mentionedpreferred embodiment of the present invention, a manufacturing method ofthe camera module is illustrated. In this manufacturing method, atfirst, the adjustable optical lens 10 is arranged in the photosensitivepath of the optical sensor 20. Because a certain deviation may exist inthe manufacturing method of the camera module, the central axis line ofthe adjustable optical lens 10 cannot be accurately controlled.Therefore, after the adjustable optical lens 10 is arranged in thephotosensitive path of the optical sensor 20, the central axis line ofthe adjustable optical lens 10 and the central axis line of the opticalsensor 20 are coincided by adjusting the position of the lens 12 in theinternal space of the optical structural member 11. And then, theadjustable optical lens 10 and the optical sensor 20 are packaged tocomplete the manufacturing method of the camera module. Those skilled inthe art can understand that the central axis line of the adjustableoptical lens 10 and the central axis line of the optical sensor 20 inthe present invention are coincided, wherein a deviation between thecentral axis line of the adjustable optical lens 10 and the central axisline of the optical sensor 20 are controlled within an acceptable range,so that the yield rate of the camera module can be increased and theimage quality of the camera module is guaranteed.

It is worth mentioning that in the step of adjusting the central axisline of the adjustable optical lens 10, the central axis line of theadjustable optical lens 10 can be adjusted not only by changing ahorizontal position of the lens 12 in the internal space of the opticalstructural member 11, but also by changing a tilt position of the lens12 in the internal space of the optical structural member 11.Furthermore, in another embodiment of the present invention, a verticalposition of the lens 12 in the internal space of the optical lens 11 canalso be adjusted based on the application needs of the camera module.Therefore, a structure design of the camera module becomes moreflexible.

As shown in FIG. 4, the present invention also comprises a manufacturingmethod 400 of a camera module, wherein the manufacturing method 400comprises the following steps:

step (401): arranging an adjustable optical lens 10 in a photosensitivepath of an optical sensor 20;

step (402): adjusting position of at least one of the lens 12 of theadjustable optical lens 10 to make the central axis line of theadjustable optical lens 10 and the central axis line of the opticalsensor 20 being coincided; and

step (403): packaging the adjustable optical lens 10 and the opticalsensor 20 so as to form the camera module.

Further, in the step (402), the central axis line of the adjustableoptical lens 10 and the central axis line of the optical sensor 20 arecoincided by adjusting the position of the lens 12 at the outermost ofthe adjustable optical lens 10. It is worth mentioning that position ofthe lens 12 of the adjustable optical lens 10 in the internal space ofthe optical structural member 11 is able to be adjusted in at least onedirection, for example, a horizontal direction. Preferably, each of thedirection of the horizontal direction, vertical direction, and tiltdirection of the lens 12 of the adjustable optical lens 10 in theinternal space of the optical structural member 11 can be adjusted.Therefore, image qualities of the camera module generated from theadjustable optical lens 10 can be guaranteed. Besides, in anotherpreferred embodiment of the present invention, at least one of thelenses 12 in the internal space of the optical structural member 11 canbe adjusted to rotate, so as to fulfill the application needs forpackaging different types of camera module.

Further, in the step (402), after the position of the lens 12 in theinternal space of the optical structural member 11 is adjusted, theadjusted lens 12 and optical structural member 11 are packaged.Therefore, the step for packaging the adjustable optical lens 10 and theoptical sensor 20 is able to prevent deviation generated between theadjusted optical lenses, so as to guarantee the image quality of thecamera module.

Furthermore, in the above mentioned method, a sidewall of the opticalstructural member 11 has at least an adjustment channel 111 formed onpositions which is corresponding to the lens 12 arranged in the internalspace of the optical structural member 11, so that the position of thelens 12 in the internal space of the optical structural member 11 fromthe external environment of the optical structural member 11 is able tobe adjusted through the adjustment channel 111.

Referring to FIG. 5 of the drawings, an adjustable optical lens 10Aaccording to a second preferred embodiment of the present invention isillustrated, wherein the adjustable optical lens 10A comprises anoptical structural member 11A and at least two lens 12A. At least one ofthe lenses 12A is adjustably installed in the optical structural member11A. Contrasting to conventional optical lens, the optical structuralmember 11A of the adjustable optical lens 10A of the present inventionis separately arranged from at least one of the lenses 12A. Besides, theadjustable optical lens 10A and an optical sensor 20A such as aphotosensitive chip are packaged to produce a camera module. The lens12A is installed in the optical structural member 11A based on thecorresponding relation between the central axis line of the adjustableoptical lens 10A and the central axis line of the optical sensor 20A.Accordingly, image qualities of the camera module formed of theadjustable optical lens 10A can be improved.

According to the above preferred embodiment of the present invention,each lens 12A can be installed in the optical structural member 11Abased on the corresponding relation between the central axis line of theadjustable optical lens 10A and the central axis line of the opticalsensor 20A, and then the adjustable optical lens 10A and an opticalsensor 20A are packaged to produce the camera module. In anotherpreferred embodiment of the present invention, the lens 12A at theoutermost of the adjustable optical lens 10A can be installed in theoptical structural member 11A based on the corresponding relationbetween the central axis line of the adjustable optical lens 10A and thecentral axis line of the optical sensor 20A, and then the adjustableoptical lens 10A and the optical sensor 20A are packaged to produce thecamera module.

After the lens 12A is installed in the optical structural member 11A,the lens 12A and the optical structural member 11A are solidified.Therefore, image qualities of the manufactured camera module can beimproved.

FIGS. 6 and 7 illustrate manufacturing flow of the camera moduleaccording to the above preferred embodiment of the present invention,wherein the camera module can not only be a prime lens camera module,but also can be an auto-focus lens camera module. The difference betweenthe prime lens camera module and the auto-focus lens camera module isthat the adjustable optical lens 10A of the prime lens camera module isdirectly packaged on a lens mount for connecting the adjustable opticallens 10A and a photosensitive device, wherein the photosensitive devicecomprises at least one optical sensor 20A. Preferably, thephotosensitive device may also comprise a circuit board attached by theoptical sensor 20A. The adjustable optical lens 10A of the auto-focuslens camera module is installed with a driver, such as a voice coilmotor, and then the driver is installed on the lens holder, so that whenthe auto-focus lens camera module is in use, the adjustable optical lens10A can be driven by the driver for moving along the photosensitive pathof the optical sensor 20A, which is defined as an offset movement of theoptical sensor 20A.

No matter in the manufacturing method of the auto-focus lens cameramodule or of the prime lens camera module, the optical structural member11A can be installed along the photosensitive path of the optical sensor20A before that the lens 12A is installed in the optical structuralmember 11A. Also, after the position of the lens 12A in the internalspace of the optical structural member 11A is adjusted, the central axisline of the adjustable optical lens 10A and the central axis line of theoptical sensor 20A are coincided. Therefore, image qualities of thecamera module can be improved. It is worth mentioning that after thelens 12A is arranged in the optical structural member 11A, the centralaxis line of the adjustable optical lens 10A and the central axis lineof the optical sensor 20A are coincided, and then the lens 12A and theoptical structural member 11A are affixed. In some embodiments, forexample, the lens 12A and the optical structural member 11A are affixedby an adhesive dispensing process.

As shown in FIG. 8, another manufacturing method 900 of a camera moduleaccording to the above preferred embodiment of the present invention isillustrated, wherein the manufacturing method 900 comprises thefollowing steps:

step (901): arranged a semi-finished article of an optical structuralmember 11A in a photosensitive path of an optical sensor 20A such as aphotosensitive chip;

step (902): arranging at least one lens 12A in the semi-finished articleof the optical structural member 11A to form an adjustable optical lens10A; and

step (903): adjusting one or more positions of the lens 12A in theinternal space of the optical structural member 11A, so that the centralaxis line of the adjustable optical lens 10A and the central axis lineof the optical sensor 20A are coincided.

Further, after the step (903), the manufacturing method 900 of a cameramodule further comprises the following steps:

step (904): affixing the lens 12A and the optical structural member 11A.It is worth mentioning that, in a preferred embodiment of the presentinvention, the lens 12A and the optical structural member 11A areaffixed by an adhesive dispensing process.

Further, according to the above mentioned preferred embodiment of thepresent invention, in the step (901), the optical structural member 11Ais arranged in the photosensitive path of the optical sensor 20A. Also,in the step (902), the lenses are overlappingly and spacedly arranged inthe internal space of the optical structural member 11A along the axialdirection of the optical structural member 11A. In another embodiment ofthe present invention, the semi-finished article of the opticalstructural member 11A arranged in the photosensitive path of the opticalsensor 20A, in the step (901), comprises an optical structural member11A and at least a lens 12A which are preassembled in the internal spaceof the optical structural member 11A, and the rest of the lenses 12A arearranged in the internal of the optical structural member 11A to formthe adjustable optical lens 10A, in the step (902).

Referring to FIG. 9 and FIG. 10, a camera module of an adjustableoptical lens according to a third preferred embodiment of the presentinvention is illustrated. As illustrated in FIG. 9 and FIG. 10, a cameramodule comprises an adjustable optical lens 10B and a photosensitivedevice 20B. The adjustable optical lens 10B is installed in aphotosensitive path of the photosensitive device 20B that lightsreflected from an object enter the inside of the photosensitive device20B from the optical lens 10B to be photoelectric converted, so that thecamera module can subsequently generate images respective to the object.

The photosensitive device 20B comprises a filter 21B, a lens mount 22B,an optical sensor 23B, and a circuit board, wherein the filter 21B isfixed at a first groove 221B arranged on the upper part of the innerwall of the lens mount 22B and on the top of a photosensitive path ofthe optical sensor 23B. The optical sensor 23B is fixed at a secondgroove 222B arranged on the lower part of the inner wall of the lensmount 22B. The optical sensor 23B is attached on the top side of thecircuit board 24B. The circuit board 24B is installed at the bottom partof the lens mount 22B. That is, the filter 21B, the optical lens 22B,the optical sensor 23B, and the circuit board 24B have finished theassembling and fixing among one another and cannot be adjusted insuccessive calibration. Lights reflected from an object may enter theinside of the camera module from the adjustable optical lens 10B andthen be received by the optical sensor 23B to proceed photoelectricconversion, so that the camera module can subsequently generate imagesrespective to the object.

The adjustable optical lens 10B comprises an optical structural member11B and one or more lenses 12B. The lenses 12B are respectivelyinstalled in the optical structural member 11B along an axial directionof the optical structural member 11B. The optical structural member 11Bis connected to the top portion of the lens mount 22B and the lenses 12Bare arranged along a photosensitive path of the optical sensor 23B. Atleast one of the lenses 12B is preassembled inside of the opticalstructural member 11B. The lens 12B preassembled inside of the opticalstructural member 11B is the adjustable optical element in the presentpreferred embodiment, which means that it is adaptable to be adjusted inthe spatial position inside of the optical structural member 11B,wherein the optical lens formed thereof is called adjustable opticallens.

In the present preferred embodiment, five lenses 12 are comprised, whichare respectively a first lens 121B, a second lens 122B, a third lens123B, a fourth lens 124B and a fifth lens 125B. The five lenses 12 areorderly overlappingly installed in the inside of the optical structuralmember 11B along the photosensitive path of the optical sensor 23B,wherein the third lens 123B, the fourth lens 124B and the fifth lens125B have already been preassembled in the optical structural member 11Band been fixed. The first lens 121B and the second lens 122B arepreassembled into the optical structural member 11B as adjustableoptical elements to be adjusted for calibration in the subsequentprocess, so as to increase imaging qualities of the camera module.

Optionally, some optical lenses of the five optical lenses are all fixedoptical lenses, while the other optical lenses are the adjustableoptical element. Optical lenses that comprise adjustable optical elementare called adjustable optical lens. Before packaging the adjustableoptical lens 10B and the photosensitive device 20B, assembling positionsof the adjustable optical elements are adaptable to be adjusted.

Specifically, an adhesive 31B is applied to orderly preassemble thesecond lens 122B and the first lens 121B into the optical structuralmember 11B. The adhesive 31B will not be completely solidified. That is,the adhesive 31D will be semi-solidified to conduct the preassembling ofthe first lens 121B and the second lens 122B, which not only preventsthem from over moving, but also make successive adjusting easier.

The adhesive 31B applied a mixed adhesive of an UV adhesive and athermosetting adhesive, which become semi-solidified after ultravioletexposure to achieve the preassembling. After the heating process, theadhesive 31B will be completely solidified, to fix the first lens 121Band the second lens 122B, so as to fix the whole camera module.

The adjustable optical lens 10B further comprises an aperture member13B. The aperture member 13B is connected to the top of the opticalstructural member 11B for introducing incident light beam and limitingthe volume of the incident light beam. In the present preferredembodiment, after the second lens 122D and the first lens 121B wereorderly preassembled into the optical structural member 11B, theaperture member 13 is fixedly installed on the top of the opticalstructural member 11B, on top of the first lens 121B, and in thephotosensitive path of the optical sensor 23B. The central axis line ofthe aperture member 13B and the central axis line of the optical sensor23B coincide or are kept within an allowable range of deviation, so asto guarantee imaging qualities of the camera module.

It is worth mentioning that there are at least two adjustment channels111B on the optical structural member 11B to connect the internal spaceof the optical structural member 11B to the external environment and tobe respectively corresponding to the first lens 121B and the second lens122B, so as to adjust the spatial positions of the first lens 121B andthe second lens 122B in the internal space of the optical structuralmember 11B through the adjustment channels 111B. Preferably, the presentembodiment applies six adjustment channels 111B, wherein three of theadjustment channels 111B are arranged on the sidewall of the opticalstructural member 111B along the preassembling position of the firstlens 121B and separately arranged from one another at 120 degrees. Theother three adjustment channels 111B are arranged on the sidewall of theoptical structural member 111B along the preassembling position of thesecond lens 122B and separately arranged from one another at 120degrees.

If the first lens 121B and the second lens 122B need to be adjusted, anelongated element such as a needle can be inserted into thecorresponding adjustment channel 111B. By controlling the needle to pokethe first lens 121B and the second lens 122B, horizontal and verticalpositions of the first lens 121B and the second lens 122B at the threespots of the corresponding adjustment channels 111B can be changed, soas to respectively conduct adjustments of the first lens 121B and thesecond lens 125D in any directions, including horizontal positions,vertical positions, and tilt positions.

In the present preferred embodiment, the optical structural member 11Bcan be implemented as a lens cone, wherein the inner wall of the opticalstructural member 11B spacingly has five limit structures 112B.Preferably, the limit structures 112B are protrudingly formed byextending the inner wall of the optical structural member 11B toward thedirection of cavity thereof, so as to respectively bear five lenses 12B,that is the first limit structure 1121B, the second limit structure1122B, the third limit structure 1123B, the fourth limit structure1124B, and the fifth limit structure 1125B, which respectively bear thefirst lens 121B, the second lens 122B, the third lens 123B, the fourthlens 124B, and the fifth lens 125B. Those skilled in the art canunderstand that the optical structural member 11B can also apply otherways to bear each of the lenses 12B.

It is worth mentioning that the camera module can also comprise a driverand the optical structural member 11B can be a component of the driver.

In the present preferred embodiment, the camera module can not only be aprime lens camera module, but be an auto-focus lens camera module.

FIG. 11 is a flow diagram of a manufacturing method 1100 of the cameramodule of the present preferred embodiment, wherein the manufacturingmethod 1100 of the camera module includes the steps of:

step (1101): assembling and securing part of the components of a cameramodule;

step (1102): preassembling at least one of the optical lenses tocomplete the preassembling of the camera module;

step (1103): capturing imaging of the preassembled camera module;

step (1104): using software to calculate the calibration measurement forthe preassembled optical lens;

step (1105): adjusting the assembling position of the preassembledoptical lens according to the calibration measurement;

step (1106): proceeding step (1107) if the adjusted result meets theresolution requirement, or repeating steps (1103) to (1105) if theadjusted result fails to meet the resolution requirement, until theadjusting of the preassembled optical lens achieves the expectedrequirement; and

step (1107): solidifying adhesive to fix the whole camera module.

In the step (1101), the filter 21B, the lens mount 22B, the opticalsensor 23B, and the circuit board 24B are assembled and fixed to formthe photosensitive device 20B. Also the optical structural member 11B isassembled and fixed on the lens mount 22B. The third lens 123B, thefourth lens 124B, and the fifth lens 125B are fixedly assembled at thecorresponding limit structures 112B of the optical structural member11B.

It is worth mentioning that in this step, assembling tolerances amongeach of the above elements should be controlled to the smallest to bekept within the allowable range of tolerance as long as possible, so asto avoid increases successive adjustment or failure of successiveadjusting due to overly high assembling tolerance.

In the step (1102), the second lens 122B and the first lens 121B areorderly preassembled into the optical structural member 11B. An adhesive31B is applied in the preassembling. The adhesive 31B is thensemi-solidified under ultraviolet exposure to complete the preassemblingof the second lens 122B and the first lens 121B. Next, the aperturemember 13B is fixedly assembled on the top of the optical structuralmember 11B. At this point, the preassembling of the camera module isfinished through the partial fixedly assembling, which makes the opticallens of the camera module become the adjustable optical lens 10D.

In the steps (1103) and (1104), the preassembled camera module ispowered on and imaging of the camera module is captured. Then thecalibration measurements for the assembling positions of the first lens121B and the second lens 122B are respectively calculated based on theimaging of the camera module.

Capturing of the imaging of the camera module is based on shooting a MTF(Modulation Transfer Function) testing chart with the camera module. TheMTF value is applied to represent the imaging quality of the cameramodule. A greater MTF value indicates a higher imaging quality of thecamera module. Every time when the imaging of the camera module iscaptured, a MTF value corresponding to the imaging needs to becalculated. The MTF value is then checked to determine if it is greaterthan the standard. If the MTF value is greater than or equal to thestandard, the capturing is completed; if the MTF value is lower than thestandard, another capturing and adjusting will be required.

It should be noted that in the process of capturing imaging every time,the environmental parameters for the shooting of the camera module,including distance between the testing chart and the camera module andthe parameter of light sources, should be strictly controlled, so as toensure the accuracy and consistency of imaging capturing for adjustingthe assembling position of the adjustable optical element.

In the process of imaging capturing of the camera module, besides ofcalculating MTF value, other characteristics of the camera module,including stained or defective pixel, artifact and vignetting, can alsobe monitored and checked.

How the software adjusting of the assembling position of the adjustableoptical element is based on studies of the sensibility of optical designof lens system. The method of the software to calculate the calibrationmeasurement of the assembling positions of the first lens 121B and thesecond lens 122B comprises the steps of:

measuring optical characteristics of the camera module, including MTFvalue, ecentricity of the optic axis, tilt of the optic axis, and fieldcurvature before adjusting based on the imaging of the camera module;and

calculating the calibration measurements for the assembling positions ofthe first lens 121B and the second lens 122B based on the sensibility ofthe optical characteristics of the assembling positions of the firstlens 121B and the second lens 122B.

In the steps (1105) and (1106), based on the calculated calibrationmeasurements of the step (1104), preassembling positions of the firstlens 121B and the second lens 122B are respectively adjusted throughcorresponding adjustment channel 111B, so as to ensure the first lens121B and the second lens 122B in the optical structural member 11B toproperly turn. That is to say, the first lens 121B and the second lens122B are properly adjusted in the horizontal position, vertical or axialposition, and tilting position thereof, such that after adjusting, thecentral axis lines of the first lens 121B and the second lens 122B andthe central axis line of the optical sensor 23B are to coincide orwithin an allowable range of deviation. Meanwhile, imaging of the cameramodule after adjusting will meet the resolution requirement. If imagingof the camera module still fails to meet the resolution requirementafter the adjustment, assembling positions of the first lens 121B andthe second lens 122B should then further be adjusted.

Each adjusting requires a capturing of the imaging of the camera module,which means to repeat the step (1103) to (1105) until the imaging of thecamera module meets the requirement.

It is worth mentioning that as the adjustable optical element isadjusted to the target position according to the calculated calibrationmeasurement and the imaging of the camera module meets the resolutionrequirement, it can be considered that the central axis line of theadjustable optical lens 10B and the central axis line of the opticalsensor 23B coincide or are within an allowable range of deviation, whichmeans the adjusting satisfies the set requirement.

In the step (1107), solidifying the adhesive 31B through heating processfixes the first lens 121B and the second lens 122B in the opticalstructural member 11B. Then the adjustment channel 111B is sealed. Thepresent embodiment preferably seals the adjustment channel 111B byinjecting adhesive or glue dispensing into the adjustment channel 111Band then conducting heating process, or waiting to be heated with theadhesive 31B to solidify the adhesive for sealing the adjustment channel111B and the adhesive 31B at the same time, which seals the adjustmentchannel 111B and fixes the first lens 121B and the second lens 122Bsimultaneously, so as to package the adjustable optical lens 10B and thephotosensitive device 20B and then to fix the whole camera module.

Besides, in the step (1107), the present invention may set at least oneadhesive injection channel 131B on the aperture member 13B for injectingadhesive to further fixed the adjusted first lens 121B. Animplementation can have two adhesive injection channels 131B that, afterthe first lens 121B alone is adjusted or both the first lens 121B andthe second lens 122B are adjusted, thermosetting adhesive is injectedinto the adhesive injection channels 131B. After the heating process ofthe camera module, the first lens 121B is further to be completelyfixed. Meanwhile, the injected adhesive can also seal the injectionchannels 131B after solidification.

Referring to FIG. 12 and FIG. 13, a camera module according to a fourthpreferred embodiment of the present invention is illustrated. As shownin FIG. 12 and FIG. 13, a camera module includes an adjustable opticallens 10C and a photosensitive device 20C. The adjustable optical lenscomprises an optical structural member 11C, three lenses 12C (which area first lens 121C, a second optical lens 122C and a third lens 123C),and an aperture member 13C, wherein the three lenses 12C are installedinside the optical structural member 11C along an axial direction of theoptical structural member 11C. The aperture member 13C is preassembledon the top of the optical structural member 11C, which is also on top ofthe first lens 121C, while keeping a certain spacing therewith. Theassembling position of the aperture member 13C is able to be adjusted inat least one direction, such as X, Y, or Z direction, relative to thespatial position of the optical structural member 11C. In the presentpreferred embodiment, the aperture member 13C is to be an adjustableoptical element that an optical lens formed thereof becomes anadjustable optical lens. The photosensitive device 20C comprises afilter 21C, an optical sensor 23C and a circuit board 24C, wherein theoptical structural member 11C is also a lens mount of the photosensitivedevice 20C. The filter 21C is fixedly installed in the opticalstructural member 11C and is under the bottom of the third lens 123C.The optical sensor 23C is fixedly installed in the optical structuralmember 11C and attached on top of the circuit board 24C under the bottomof the filter 21C. The lenses 12C, the aperture member 13C, and thefilter 21C are in a photosensitive path of the optical sensor 23C, solights reflected from an object may enter the inside of the cameramodule from the adjustable optical lens 10C and then be received by theoptical sensor 23C to proceed photoelectric conversion, so that thecamera module can subsequently generate images respective to the object.

Specifically, the inner wall of the optical structural member 11C formsa first groove 221C, a second groove 222C and a third groove 223C, whichare sequentially and spacedly set in the top, middle, and bottom of theoptical structural member 11C. The filter 21C is installed in the secondgroove 222C. The optical sensor 23C is held in the third groove 223C andattached on the circuit board 24C on top of the circuit board 24C. Thecircuit board 24C is installed in the bottom portion of the opticalstructural member 11C.

The first lens 121C is fixedly installed at a first limit structure1121C arranged on the inner wall of the optical structural member 11C.The second lens 122C is fixedly installed at a second limit structure1122C arranged on the inner wall of the optical structural member 11C.The third optical lens is installed at a third limit structure 1123Carranged on the inner wall of the optical structural member 11C. Thefirst limit structure 1121C, the second limit structure 1122C and thethird limit structure 1123C are protrudingly formed by extending theinner wall of the optical structural member 11C toward the direction ofthe cavity thereof, so as to respectively bear the first lens 121C, thesecond lens 122C and the third lens 123C.

Referring to FIG. 14, a manufacturing method 1400 of the camera moduleof the present preferred embodiment comprises the steps of:

step (1401): assembling and securing part of the components of a cameramodule;

step (1402): preassembling the aperture member 13C on the top of theadjustable optical lens 10C;

step (1403): capturing imaging of the preassembled camera module;

step (1404): using software to calculate the calibration measurement forthe aperture member 13C;

step (1405): adjusting the assembling position of the aperture member13C according to the calibration measurement;

step (1406): proceeding step (1407) if the adjusted result meets theresolution requirement, or repeating steps (1403) to (1405) if theadjusted result fails to meet the resolution requirement, until theadjusting of the aperture member achieve the expected requirement; and

step (1407): solidifying an adhesive to fix the whole camera module.

In the step (1401), part of the module components of the camera moduleare assembled and fixed. That is, the filter 21C, the optical sensor 23Cand the circuit board 24C are installed and fixed at the designatedpositions of the optical structural member 11C. Also, the third lens123C, the second lens 122C and the first lens 121C are orderly installedand fixed at the designated positions in the optical structural member11C, so that the three lenses 12C are in a photosensitive path of theoptical sensor 23C, and that the central axis lines of the three lenses12C and the central axis line of the optical sensor 23C coincide or arewithin an allowable range of deviation. Besides, assembling tolerancesamong each of the above components are strictly controlled to guaranteethe imaging qualities of the camera module and to reduce the workload offuture adjusting.

In the step (1402), the aperture member 13C is preassembled on the topof the optical structural member 11C through the way of semi-solidifyingthe adhesive 31C, so as to have the aperture member 13C in thephotosensitive path of the optical sensor 23C and allow the aperturemember 13 to be adjusted in at least one direction relative to thespatial position of the optical sensor 23C or the optical structuralmember 11C. The adhesive 31C is preferably thermosetting adhesive thatcan be semi-solidified under ultraviolet exposure for preassembling.

In the steps (1403) to (1406), the preassembled camera module is poweredon and imaging of the camera module is captured. Then the calibrationmeasurement for the aperture member 13C is calculated by the softwarebased on the imaging of the camera module. Proper adjusting of theassembling position of the aperture member 13C is conducted according tothe calculated calibration measurement, so as to make the central axisline thereof and the central axis line of the optical sensor 23Ccoincide or be within an allowable range of deviation, which is to alsomake the central axis line of the adjustable optical lens 10C and thecentral axis line of the optical sensor 23C coincide or be within anallowable range of deviation. At this point, the imaging of the cameramodule meets the resolution requirement. If imaging of the camera modulestill fails to meet the resolution requirement after the aperture member13C has been adjusted, further capturing of the imaging of the cameramodule and new adjusting of the aperture member 13C are needed until itis adjusted to an eligible position and then fixed.

In the step (1407), when the adjusting of the aperture member 13C makesthe imaging of the camera module meet the resolution requirement, thecamera module will be heated, so as to completely solidify the adhesive31C that attaches the aperture member 13C to the optical structuralmember 11C, to then fix the whole camera module.

Referring to FIG. 15 and FIG. 16, a fifth preferred embodiment of thepresent invention is illustrated. As shown in FIG. 15 and FIG. 16, acamera module comprises an adjustable optical lens 10D and aphotosensitive device 20D. The adjustable optical lens 10D is installedin a photosensitive path of the photosensitive device 20D that lightsreflected from an object enter the inside of the photosensitive device20D from the optical lens 10D to be photoelectric converted, so that thecamera module can then generate images respective to the object.

The photosensitive device 20D comprises a filter 21D, a lens mount 22D,an optical sensor 23D, and a circuit board, wherein the filter 21D isfixed at a first groove 221D arranged on an upper part of an inner wallof the lens mount 22D and aligned in a top position of thephotosensitive path of the optical sensor 23D. The optical sensor 23D isfixed at a second groove 222D arranged on a lower part of the inner wallof the lens mount 22D. The optical sensor 23D is attached on the topside of the circuit board 24D. The circuit board 24D is fixed at thebottom part of the lens mount 22D. That is, the filter 21D, the opticallens 22D, the optical sensor 23D, and the circuit board 24D havefinished the assembling and fixing among one another and cannot beadjusted in successive calibration. Lights reflected from an object mayenter the inside of the camera module from the adjustable optical lens10D and then be received by the optical sensor 23D to proceedphotoelectric conversion, so that the camera module can subsequentlygenerate images respective to the object.

The adjustable optical lens 10D comprises an optical structural member11D and one or more lenses 12D. The lenses 12D are overlappedly andspacedly installed inside of the optical structural member 11D along anaxial direction of the optical structural member 11D. The opticalstructural member 11D is installed on a top portion of the lens mount22D and the lenses 12D are aligned along the photosensitive path of theoptical sensor 23D. At least one of the lenses 12D is preassembledinside of the optical structural member 11D. The lens 12 preassembledinside of the optical structural member 11D is an adjustable opticalelement, which means that it is adaptable to be adjust in at least onedirection in the optical structural member 11D, wherein the optical lensformed thereof is called adjustable optical lens.

In the present preferred embodiment, there are five lenses 12, which area first lens 121D, a second lens 122D, a third lens 123D, a fourth lens124D, and a fifth lens 125D. Five lenses 12 are orderly, overlappinglyand spacedly installed inside the optical structural member 11D alongthe photosensitive path of the optical sensor 23D, wherein the secondlens 122D, the third lens 123D and the fourth lens 124D have beenpreassembled in the optical structural member 11D and been fixed thattheir positions are not adjustable. The first lens 121D and the fifthlens 125D are preassembled in the optical structural member 11D asadjustable optical elements to be adjusted for calibration in thesubsequent process, so as to increase imaging qualities of the cameramodule.

Optionally, some optical lenses of the five optical lenses are all fixedoptical lenses, while the other optical lenses are the adjustableoptical element. Optical lenses that comprise adjustable optical elementare called adjustable optical lens. Before packaging the adjustableoptical lens 10D and the photosensitive device 20D, assembling positionsof the adjustable optical elements are adaptable to be adjusted.

Specifically, an adhesive 31D is applied to orderly preassemble thefirst lens 121D and the fifth lens 125D in the optical structural member11D. The adhesive 31D will not be completely solidified. That is, theadhesive 31D will be semi-solidified to conduct the preassembling of thefirst lens 121D and the fifth lens 125D, which not only prevents themfrom over moving, but also make successive adjusting easier.

The adjustable optical lens 10D further comprises an aperture member13D. The adhesive 31D is applied to preassemble the aperture member 13Don the top of the optical structural member 11D for introducing incidentlight beam and limiting the volume of the incident light beam, whereinthe assembling position of the aperture member 13D is adaptable to beadjusted in at least one direction relative to the optical sensor 23D,which is mainly adjusting in horizontal direction, but adjusting invertical direction and tilt direction are also possible.

In the present preferred embodiment, sequentially, the fifth lens 125Dis preassembled, and then the fourth lens 124D, the third lens 123D andthe second lens 122D are fixedly assembled. Then, the first lens 121D ispreassembled in the optical structural member 11D, and then the aperturemember 13D is preassembled on the top of the optical structural member11D. The aperture member 13D is on top of the first lens 121D and alsopositioned in the photosensitive path of the optical sensor 23D. Amongthe above, the first lens 121D, the fifth lens 125D and the aperturemember 13D are adjustable optical elements that the assembling positionsthereof are adaptable to be adjusted in at least one direction in thesuccessive process of calibration or adjusting wherein the adjustabledirections comprise horizontal direction, vertical direction, tiltdirection, and peripheral direction. After adjusting, the central axisline of the adjustable optical lens and the central axis line of theoptical sensor 23D are made to coincide or be within an allowable rangeof deviation, so as to have the imaging of the camera module achieve theresolution requirement and to guarantee imaging qualities of the cameramodule.

The adhesive 31D applied is a mixed adhesive of an UV adhesive and athermosetting adhesive, which become semi-solidified after ultravioletexposure to achieve the preassembling. After the heating process, theadhesive 31D will be completely solidified to fix the whole cameramodule.

It is worth mentioning that there are at least two adjustment channels111D on the optical structural member 11D to connect the internal spaceof the optical structural member 11D to the external environment and tobe respectively corresponding to the adjustable optical elements. In thepresent preferred embodiment, the adjustment channels 111D arerespectively arranged in the sidewalls of the optical structural member11D corresponding to the first lens 121D and the fifth lens 125D, so asto adjust the spatial positions of the first lens 121D and the fifthlens 125D in the internal space of the optical structural member 11Dthrough the adjustment channels 111D. Preferably, the present embodimentprovides six adjustment channels 111D, wherein three of the adjustmentchannels 111D are arranged in the sidewall of the optical structuralmember 111D along the preassembling position of the first lens 121D andseparately arranged from one another at 120 degrees. The other threeadjustment channels 111D are arranged in the sidewall of the opticalstructural member 111D along the preassembling position of the secondlens 122D and separately arranged from one another at 120 degrees.

If the first lens 121D and the fifth lens 125D need to be adjusted, anelongated element such as a needle can be inserted into thecorresponding adjustment channel 111D. By controlling the needle to pokethe first lens 121D and the fifth lens 125D, horizontal and verticalpositions of the first lens 121D and the fifth lens 125D at the threespots of the corresponding adjustment channels 111D can be changed, soas to respectively conduct adjustment of the first lens 121D and thefifth lens 125D in directions including horizontal positions, verticalpositions, and tilt positions.

Because the aperture member 13D is preassembled on the top of theadjustable optical lens 10D, assembling position of the aperture member13D can be adjusted through any practicable ways.

In the present preferred embodiment, the optical structural member 11Dcan be implemented as a lens cone, wherein the inner wall of the opticalstructural member 11D has five limit structures 112D. Preferably, thelimit structures 112D are spacedly and protrudedly formed by extendingthe inner wall of the optical structural member 11D toward the directionof the cavity thereof, so as to respectively bear five of the lenses12D, that is the first limit structure 1121D, the second limit structure1122D, the third limit structure 1123D, the fourth limit structure1124D, and the fifth limit structure 1125D which respectively bear thefirst lens 121D, the second lens 122D, the third lens 123D, the fourthlens 124D, and the fifth lens 125D. Those skilled in the art canunderstand that the optical structural member 11D can also apply otherways to bear each of the lenses 12D.

It is worth mentioning that the camera module can also comprise a driverand the optical structural member 11D can be a component of the driver.

In the present preferred embodiment, the camera module can not only be aprime lens camera module, but be a auto-focus lens camera module.

FIG. 17 is a flow diagram of a manufacturing method 1700 of the cameramodule of the present preferred embodiment, wherein the manufacturingmethod 1700 of the camera module includes the following steps:

step (1701): Arranging an adjustable optical lens 10D along aphotosensitive path of the optical sensor 23D comprised by thephotosensitive device 20B;

step (1702): preassembling the adjustable optical element in theadjustable optical lens 10D to complete a preassembly of a cameramodule;

step (1703): adjusting the assembling position of the adjustable opticalelement to make the imaging of the adjusted camera module meet theresolution requirement; and

step (1704): packaging the adjustable optical lens 10D and thephotosensitive device 20D so as to fix the camera module.

In the step (1701), the filter 21D, the lens mount 22D, the opticalsensor 23D, and the circuit board 24D are fixedly assembled to form thephotosensitive device 20D.

Also, the optical structural member 11D is fixedly assembled on the lensmount 22D. The second lens 122D, the third lens 123D and the fourth lens124D are fixedly assembled at the corresponding limit structures 112D ofthe optical structural member 11D. Then adjustable optical lens 10D isset in the photosensitive path of the optical sensor 23D to complete thefixing assembling of part of the components of the camera module. Theseelements in the present embodiment are non-adjustable optical elements.

It is worth mentioning that in this step, assembling tolerances amongeach of the above elements should be controlled to the smallest to bekept within the allowable range of tolerance as long as possible, so asto avoid increases of successive adjustment or failure of successiveadjusting due to overly high assembling tolerance among each of theabove elements

In the step (1702), the first lens 121D and the fifth lens 125D arepreassembled in the optical structural member 11D and the aperturemember 13D is preassembled on top of the optical structural member 11D.An adhesive 31D is used to conduct the preassembling of the first lens121D, the fifth lens 125D and the aperture member 13D. The adhesive 31Dis then semi-solidified by ultraviolet exposure to finish thepreassembling of the first lens 121D, the fifth lens 125D and theaperture member 13D. At this point, the preassembling of the cameramodule is produced. The first lens 121D, the fifth lens 125D and theaperture member 13D in the present preferred embodiment are theadjustable optical elements to make the optical lens of the cameramodule that comprises the adjustable optical elements become theadjustable optical lens 10D.

The step (1703) comprises the steps of:

(17031) capturing imaging of the preassembled camera module;

(17032) calculating calibration measurement for the adjustable opticalelement with software based on the imaging of the camera module; and

(17033) adjusting assembling position of the adjustable optical elementaccording to the calibration measurement.

In the step (1703), if the resolution requirement of the camera modulefails to meet the request after the adjustable optical element wasadjusted, the steps (17031) to (17033) need to be repeated until theresolution of the adjusted camera module meets the requirement.

In the step (17032) and the step (17033), the calibration measurementsfor the assembling positions of the first lens 121D, the fifth lens 125Dand the aperture member 13D are respectively calculated based on theimaging of the camera module. Then according to each of the calibrationmeasurements to respectively adjust the assembling positions of thefirst lens 121D, the fifth lens 125D and the aperture member 13D.

In the above steps, capturing of the imaging of the camera module isbased on shooting a MTF (Modulation Transfer Function) testing chartwith the camera module. The MTF value is applied to represent theimaging quality of the camera module. A greater MTF value indicates ahigher imaging quality of the camera module. Every time when the imagingof the camera module is captured, a MTF value corresponding to theimaging needs to be calculated. The MTF value is then checked todetermine if it is greater than the standard. If the MTF value isgreater than or equal to the standard, the capturing is completed; ifthe MTF value is lower than the standard, another capturing andadjusting will be required.

It should be noted that in the process of capturing imaging every time,the environmental parameters for the shooting of the camera module,including distance between the testing chart and the camera module andthe parameter of light sources, should be strictly controlled, so as toensure the accuracy and consistency of imaging capturing for adjustingthe assembling position of the adjustable optical element.

In the process of imaging capturing of the camera module, besidescalculating MTF value, other characteristics of the camera module,including stained or defective pixel, artifact and vignetting, can alsobe monitored and checked.

How the software adjusting of the assembling position of the adjustableoptical element is based on studies of the sensibility of optical designof lens system. A method of the software to calculate the calibrationmeasurement of the assembling positions of the first lens 121D, thefifth lens 125D and the aperture member 13D comprises the steps of:

measuring optical characteristics of the camera module, including MTFvalue, eccentricity of the optic axis, tilt of the optic axis, and fieldcurvature before adjusting based on the imaging of the camera module;and

calculating the calibration measurements for the assembling positions ofthe first lens 121D, the fifth lens 125D, and the aperture member 13Dbased on the sensibility of optical characteristics of the assemblingpositions of the first lens 121D, the fifth lens 125D and the aperturemember 13D.

Furthermore, in the step (1703), based on the calculated calibrationmeasurements, preassembling positions of the first lens 121D, the fifthlens 125D and the aperture member 13D are respectively adjusted, so asto ensure the first lens 121D and the fifth lens 125D in the opticalstructural member 11D to properly turn. That is to say, the first lens121D and the fifth lens 125D are properly adjusted in the horizontalposition, vertical or axial position, or tilting position thereof Also,the horizontal position, vertical or axial position, or tilting positionof the aperture member 13D can also be properly adjusted accordingly.After adjusting, the central axis line of the adjustable optical lens10D and the central axis line of the optical sensor 23D are to coincideor within an allowable range of deviation. Imaging of the camera moduleafter adjusting also meets the resolution requirement. If imaging of thecamera module still fails to meet the resolution requirement after theadjustment, assembling position of the adjustable optical element shouldthen further be adjusted.

It is worth mentioning that as the adjustable optical element isadjusted to the target position according to the calculated calibrationmeasurement, it can be considered that the central axis line of theadjustable optical lens 10D and the central axis line of the opticalsensor 23D coincide or are within an allowable range of deviation, whichmeets the target requirement that the imaging of the adjusted cameramodule meet the resolution requirement.

In the step (1704), solidifying the adhesive 31D through the heatingprocess fixedly attaches the first lens 121D, the fifth lens 125D andthe aperture member 13D to the optical structural member 11D. Then theadjustment channel 111D is sealed. The present embodiment preferablyconducts the sealing by injecting adhesive into the adjustment channel111D, which seals and further fixes the first lens 121D and the secondlens 122D, so as to package the adjustable optical lens 10D and thephotosensitive device 20D.

Besides, in the step (1704), the present invention may set at least oneadhesive injection channel 131D on the aperture member 13D for injectingadhesive (e.g. thermosetting adhesive) to further fixed the adjustedfirst lens 121D and fifth lens 125D.

Another implementation can have two adhesive injection channels 131Dthat, after the first lens 121D and the fifth lens 125D are adjusted,thermosetting adhesive is injected into the adhesive injection channels131D. After the heating process of the camera module, the first lens121D and the fifth lens 125D are turned to be completely fixed.Meanwhile the adhesive injection channels 131D can be sealed.

Those skilled in the art shall understand that the above mentionedembodiments of the present invention in the descriptions and figures areto give examples, but to confine the present invention. Objectives ofthe present invention are completely and effectively implemented.Notions of the functions and structures of the present invention havebeen shown and described in the embodiments, whereas implementations ofthe present invention may have modifications or changes in any wayswithout going against the above notions.

One skilled in the art will understand that the embodiment of thepresent invention as shown in the drawings and described above isexemplary only and not intended to be limiting.

It will thus be seen that the objects of the present invention have beenfully and effectively accomplished. The embodiments have been shown anddescribed for the purposes of illustrating the functional and structuralprinciples of the present invention and is subject to change withoutdeparture from such principles. Therefore, this invention includes allmodifications encompassed within the spirit and scope of the followingclaims.

What is claimed is:
 1. A camera module, comprising: an optical device including an optical sensor; and an adjustable optical lens arranged along a photosensitive path of said optical sensor, wherein said adjustable optical lens comprises an optical structural member, one or more lenses mounted in said optical structural member, and at least one adjustable lens which is movably arranged in an internal space of said optical structural member along an axial direction of said optical structural member, wherein said at least one adjustable lens is preassembled in an adjustable manner that, before packaging said adjustable optical lens and said optical device, a position of said at least one adjustable lens in said internal space of said optical structural member is able to be adjusted until a central axis line of said adjustable optical lens and a central axis line of said optical sensor are coincided or within a predetermined range of deviation therebetween, wherein said at least one adjustable lens after adjustment is fixed in position in said optical structural member and said adjustable optical lens and said optical device are packaged to form said camera module, wherein said position of said at least one adjustable lens being preassembled is adjusted within said internal space of said optical structural member with at least one of horizontal direction, vertical direction, tilt direction, and peripheral direction of said adjustable optical lens.
 2. The camera module, as recited in claim 1, wherein said optical structural member has at least one adjustment channel adapted to communicate said internal space of said optical structural member with an external environment, and said lens being preassembled is arranged in said internal space of the optical structural member corresponding to said adjustment channel, wherein said position of said lens in said internal space of said optical structural member is able to be adjusted through said adjustment channel in at least one direction.
 3. The camera module, as recited in claim 1, wherein said at least one adjustable lens is disposed in said internal space of said optical structural member with adhesive that said position of said at least one adjustable lens in said internal space of said optical structural member is adjustable when said adhesive is in a semi-solidified condition and is fixed when said adhesive is solidified.
 4. The camera module, as recited in claim 2, wherein said adjustable channel is horizontally extended from a side wall of said optical structural member to communicate with said internal space thereof.
 5. The camera module, as recited in claim 1, wherein said adjustable optical lens further comprises an aperture member which is installed at a top portion of said optical structural member and aligned with said lenses along a photosensitive path of said optical sensor of said optical device and is arranged to be adjustable in at least one direction.
 6. The camera module, as recited in claim 5, wherein a position of said aperture member is adjustable in a direction of horizontal direction, vertical direction, tilt direction, and peripheral direction thereof.
 7. The camera module, as recited in claim 4, wherein said adjustable optical lens further comprises an aperture member which is installed at a top portion of said optical structural member and aligned with said lenses along a photosensitive path of said optical sensor of said optical device and is arranged to be adjustable in at least one direction, wherein a position of said aperture member is adjustable in a direction of horizontal direction, vertical direction, tilt direction, and peripheral direction thereof.
 8. The camera module, as recited in claim 1, wherein said optical device further comprises a filter and a circuit board, wherein said filter is installed in said optical structural member and positioned below said lenses, wherein said optical sensor is attached on said circuit board and positioned below said filter, wherein a space distance between said optical structural member with respect to said optical sensor is fixed.
 9. The camera module, as recited in claim 7, wherein said optical device further comprises a filter and a circuit board, wherein said filter is installed in said optical structural member and positioned below said lenses, wherein said optical sensor is attached on said circuit board and positioned below said filter, wherein a space distance between said optical structural member with respect to said optical sensor is fixed.
 10. The camera module as recited in claim 4, wherein before packaging said adjustable optical lens and said optical device, an imaging of said camera module is captured after preassembled, wherein calibration measurement for said adjustable optical element is calculated with a software based on said imaging of said camera module, and then said position of said adjustable optical element is adjusted according to said calibration measurement.
 11. The camera module as recited in claim 9, wherein before packaging said adjustable optical lens and said optical device, an imaging of said camera module is captured after preassembled, wherein calibration measurement for said adjustable optical element is calculated with a software based on said imaging of said camera module, and then said position of said adjustable optical element is adjusted according to said calibration measurement.
 12. A manufacturing method of a camera module, comprising the steps of: (a) arranging an adjustable optical lens in a photosensitive path of an optical sensor of an optical device; (b) preassembling at least one adjustable lens in said adjustable optical lens as a preassembled lens to complete a preassembly of said camera module; (c) adjusting an assembling position of said preassembled lens until a central axis line of said adjustable optical lens and a central axis line of said optical sensor are coincided or within a predetermined range of deviation therebetween to make an imaging of said camera module after adjusted meeting a resolution requirement, wherein said assembling position of said preassembled lens is adjusted through adjusting at least one of horizontal direction, tilt direction and peripheral direction of said adjustable optical lens; and (d) affixing said assembled position of said preassembled lens after adjustment in position and packaging said adjustable optical lens and said optical device to form said camera module.
 13. The method, as recited in claim 12, wherein said adjustable optical lens further comprises an aperture member, wherein in the step (b), said aperture member is preassembled at a top portion of said adjustable optical lens.
 14. The method, as recited in claim 12, wherein a side wall of an optical structural member of said adjustable optical lens is provided with at least one adjustment channel provided therein to connect an internal space of said optical structural member to an external environment, wherein said lens be preassembled in said internal space of said optical structural member corresponding to said adjustment channel is adaptable to adjust a position thereof inside said optical structural member through said adjustment channel.
 15. The method, as recited in claim 13, wherein a side wall of an optical structural member of said adjustable optical lens is provided with at least one adjustment channel provided therein to connect an internal space of said optical structural member to an external environment, wherein said lens be preassembled in said internal space of said optical structural member corresponding to said adjustment channel is adaptable to adjust a position thereof inside said optical structural member through said adjustment channel.
 16. The method, as recited in claim 14, wherein, the step (d) further comprises the steps of sealing said adjustable channel by dispensing an adhesive in said adjustable channel; and solidifying said adhesive for sealing said adjustable channel by conducting a heating process, so that said lens after adjustment is fixed in position and said camera module is made.
 17. The method, as recited in claim 14, wherein said adjustment channel is horizontally extended from said side wall of said optical structural member to communicate with said internal space thereof.
 18. The method, as recited in claim 15, wherein said adjustment channel is horizontally extended from said side wall of said optical structural member to communicate with said internal space thereof.
 19. The method, as recited in claim 12, wherein the step (c) further comprises the steps of: (c1) capturing imaging of said camera module after preassembled; (c2) calculating calibration measurement for said adjustable optical element with a software based on said imaging of said camera module; and (c3) adjusting said assembling position of said adjustable optical element according to said calibration measurement; wherein if said imaging of said camera module fails to meet said resolution requirement after said adjustable optical element is adjusted, the steps (c1) to (c3) are repeated until said imaging of said adjusted camera module meets said resolution requirement.
 20. The method, as recited in claim 12, wherein the step (c) further comprises the steps of: (c1) capturing imaging of said camera module after preassembled; (c2) calculating calibration measurement for said adjustable optical element with a software based on said imaging of said camera module; and (c3) adjusting said assembling position of said adjustable optical element according to said calibration measurement; wherein if said imaging of said camera module fails to meet said resolution requirement after said adjustable optical element is adjusted, the steps (c1) to (c3) are repeated until said imaging of said adjusted camera module meets said resolution requirement; wherein said camera module after preassembled is powered on and said imaging of said camera module is captured, wherein said capturing of said imaging of said camera module is based on shooting MTF testing chart with said camera module, wherein a MTF value is applied to represent an imaging quality of said camera module, wherein a greater MTF value indicates a higher imaging quality of said camera module, wherein when said imaging of said camera module is captured each time, said MTF value corresponding to said imaging needs to be calculated and said MTF value is checked to determine if said MTF value is greater than a standard, wherein if said MTF value is greater than or equal to said standard, said capturing is completed, and that if said MTF value is lower than said standard, another capturing is required. 